747003731 has 4 divisors (see below), whose sum is σ = 747147000. Its totient is φ = 746860464.

The previous prime is 747003679. The next prime is 747003739. The reversal of 747003731 is 137300747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137300747 = 37 ⋅3710831.

It is a cyclic number.

It is not a de Polignac number, because 747003731 - 2⁶ = 747003667 is a prime.

It is a super-2 number, since 2×747003731² = 1116029148255840722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (747003739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63506 + ... + 74343.

It is an arithmetic number, because the mean of its divisors is an integer number (186786750).

Almost surely, 2^747003731 is an apocalyptic number.

747003731 is a deficient number, since it is larger than the sum of its proper divisors (143269).

747003731 is a wasteful number, since it uses less digits than its factorization.

747003731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143268.

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 747003731 is about 27331.3689924233. The cubic root of 747003731 is about 907.3487744936.

The spelling of 747003731 in words is "seven hundred forty-seven million, three thousand, seven hundred thirty-one".